Telephone-receiver-support lock.



N0. 68!,296 Patented Aug. 27, IQUI. A.. L. BRINCKLE.

TELEPHONE RECEIVER SUPPORT LOOK.

(Application fllad my 15, 1901.)

(No Model.)

q/Vihwono cov, PHOTO-UM WAsHINnYONA 0.1:.

UNITED STATES PATENT OF ICE.

ADDINGTON L. BRINOKLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OFONE-HALF TO BENJAMIN O. FOX AND WILLIAM O. MOOLURG, OF

CHESTER, PENNSYLVANIA.

TELEPHONE-RECElVER-SUPPORT LOCK.

SPECIFICATION forming part of Letters Patent No. 681,296, dated August2'7, 1901.

' Application filed May 15, 1901. Serial No- 60,276. (No model.)

To all whom it may concern:

Be it known that I, ADDINGTON L. BRINCK- LE, a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia 5 andState of Pennsylvania,have invented certain new and useful Improvementsin Telephone Receiver Support Locks; and I do hereby declare thefollowing to be a full,clear, and exact description of the invention,such as willenable others skilled in the art to which it appertains tomake and use the same.

This invention relates to latches or looks for telephone-receiversupports, and has particular reference to that class ofreceiver-supports which are held in an elevated position when thereceiver is removed and depressed by the weight of the receiver whensame is attached.

The objects of the invention are, first, to

provide alock that will hold the receiver-support in a depressedposition when the receiver is removed; second,to provide means forreleasing the receiver-support from its depressed position, and, third,to provide means 2 5 whereby the receiver support is automa icallylocked when the receiver is attached and the support is depressed by theweight of the receiver.

-Finally,the object of the invention is to pro- 0 vide a latch or lookfor telephone-receiver supports and means for operating same possessingadvantages in points of simplicity, efficiency, and durability and whichwill be comparatively inexpensive to produce and 3 5 sustain.

In describing the invention in detail reference will be had to theaccompanying drawings, forming a part of this specification, whereinlike characters denote corresponding 0 parts in the several views, inwhich- Figure l is a perspective view showing the invention attached.Fig. 2 is a part section showing the device in elevation. Fig. 3 is aperspective view of the operating-key.

In the drawings, 1 indicates the casing of a telephone, in which thereceiver-supportin g arm and the mechanism for opening and closin g thecircuit of the telephone are contained.

2 is the receiver-support, which is held in an elevated position whenfree to move by the spiral spring 3, which is suitably secured withinthe telephone-casing.

Secured to the inner side of the casing through which thereceiver-support penetrates and adjacent to the support is a latch 4,pivoted to the casing at 5. The upper or free end of the latch iscurved, as shown at- 6, and when it is in its normal position liesacross the slot through which the telephone receiver support protrudes.A short distance below the upper curved surface of the latch, on itsinner side, is the recess 7, conforming to I the shape of thereceiver-s11 pport, so as to form a lodgment for same when depressed andpreventing its elevation by the spring 3. The lower inner surface of thelatch is cam-shaped, as shown at 8. In the casing on the side of thereceiver-support opposite that to which the latch is secured is a slot 9for receiving the key which operates thelatch. A bracketplate 10 issecured to the casing so that its vertical side will be in alinementwith and fall directly back of the slot 9, said vertical side beingprovided with an aperture 11. Se cured to the casing at one side of andparallel to the slot 9 is a plate 12. A spring 13 bears against theouter side of the latch and holds it in position so as to normally coverthe slot through which the receiver-support protrudes. A pin 14 limitsthe forward motion imparted to the latch 4 by the spring 13.

The key for operating the device is formed with the stem 15, providedwith the crosspiece 16 at right angles therewith near its outer end,said cross-piece being of sufficient length to engage the cam-surface ofthe latch when being turned and to be in frictional contact with theplate 12 when it has reached a horizontal position.

The operation of the device is as follows: 0 In order to release thereceiver-support, and thereby make the necessary electrical connectionfor conversation over the telephone, the key is inserted in the slot 9,the outer end of the key passing through the aperture 11, which forms asocket for said key. It is then only necessary to turn the key, when thecross-piece 16, by its contact with the cam-surface of the latch,wi1lcause same to be forced backward and leave the receiver-support free torise, the latch being held in this position by reason of the frictionalcontact of the cross-piece 16 with the cam-surface of the latch and theedge of the plate 12. The key can then be withdrawn and the parts willreturn to their normal position with the receiver-support remainingelevated. It will then be obvious that to again lock thereceiver-support it will only be necessary to attach the receiverthereto, the weight of which will depress the receiver-support and causesame to come in contact with the upper curved surface of the latch andforce same backward until the support has reached the plane of therecess in the latch, when the latch will be free to spring forward andsecurely lock the support in a depressed position.

The construction and advantages will,.it is thought, he understood fromthe foregoing description, it being noted that various changes in theproportions and other details of construction may be resorted to forsuccessfully carrying the invention into practice without departing fromthe scope of the claims.

Having thus described the invention,what I claim as new, and desire tosecure by Letters Patent, is-

1. In a telephone-receiver-support lock, the combination of areceiver-support, a latch secured adjacent to the support and means forholding the latch in looking engagement with the receiver-supportindependent of the use of the line at other stations.

2. In a telephone-receiver-support lock, the combination of areceiver-support, a latch secured adjacent to the support and meanswhereby the support is automatically locked when depressed independentof the use of the line at other stations.

3. In a telephone-receiver-support lock, the combination of areceiver-support, a latch pivotally sec ured adjacent to the support andmeans for holding the latch in looking engagement with thereceiver-support independent of the use of the line at other stations.

4:. In atelephone-receiver-supportlock, the combination of areceiver-support, a latch pivotally secured adjacent to the support andmeans whereby the support is automatically locked when depressedindependent of the use of the line at other stations.

5. In a telephone-receiver-supportlock, the combination of areceiver-support, a latch pivotally secured adjacent to the support, a

recess in the inner side of the latch adapted to receive the supportwhen the support is depressed and means for throwing the latch inlocking engagement with the support independent of the use of the lineat other stations.

6. In a telephone-receiver-support lock, the combination of areceiver-support, a latch pivotally secured adjacent to the support, aspring bearing against the outer edge of said latch, a recess in theupper inner edge of the latch, said latch being cam-shaped below therecess, a bracket-plate secured on the opposite side of thereceiver-support, an aperture in the vertical face of said plate, africtionplate adjacent to the bracket-plate and keyoperated meanswhereby the support is released when locked in a depressed positionsubstantially as described.

7. In atelephone-receiyer-support lock, the combination of areceiver-support, a latch pivotally secured adjacent to the support, the

free end of said latch being semicircular in shape, a recess in theinner side of the latch, and means for normally holding the latch in thepath of the support whereby the support will be automatically locked insaid recess when said support is depressed substantially as described.

8. In a telephone-receiver-support lock, the

combination of a receiver-support, a latch pivotally secured adjacent tothe support, means for holding the latch in looking engagement with thereceiver-support, and keyoperated means whereby the support is releasedfrom said locking engagement at the will of the user.

9. In atelephone-receiver-support lock, the

combination of a receiver-support, a latch,

ADDINGTON L. BRINOKLI J.

\Vitnesses:

HOWARD P. HARBERT, (Inns. J. I-Ioon.

